The spike is so tempting, the company will cash in with a secondary offering that hits on Friday. It's selling another 5,582,215 shares. Should today's price hold, that will put about $514 million into its coffers, more than the roughly $300 million it raised with its IPO.

Other stakeholders are cashing in, too. They'll be selling 8,417,785 shares of their own. At $92 a pop, these investors and execs will nab $774 million. All of it has been an insane ride for FireEye's founder and largest stakeholder, Ashar Aziz.

He owns a 7.8% stake with 10,835,000 shares, worth just over $1 billion when the share price reached $93. He's also one of the people cashing out, selling 1,043,904 of his shares, according to SEC documents.

The even bigger winners are VC firms Sequoia and Northwest Ventures, each with a roughly 15% stake and about 21 million shares.

So, what's going on with FireEye? A few things:

The company's flagship product solves a really hard computer security problem. It is able to stop hack attacks that were previously almost impossible to stop.

Some Wall Street analysts have been really gung ho on the company. Wells Fargo started tracking it a month ago, saying it was "a once in a decade opportunity to invest in a truly disruptive technology."

But the high share price, and Aziz's newfound billionaire status, might not last that long.

FireEye issued light guidance for its Q1 of $70-$72 million and EPS of -$0.51 to -$0.56, below the $76.2 million and -$0.37 EPS analysts wanted. And it issued light EPS guidance for the next full year of -$2.00 to -$2.20, well below what analysts wanted to hear, -$1.42.

Plus, share prices are starting to drop today already, thanks to this soon-to-come flood of new shares. Prices have dropped to just below $92 so far, which makes Ariz's stake worth just under $1 billion.